Spot setting device



GI WOLFF 'SPOT SETTING DEVICE Filed July 13, 1946 Patented Aug. 12, 1947 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to devices adapted to drive nails or rivets into a flexible sheet member or fabric that is to be ornamented thereby and for other useful purposes.

One object of the invention is to provide a device of the character described which is so inexpensive, simple, convenient and safe in operation that it is adapted for household use for the purpose of decorating fabrics of leather, textile and composition materials by the use of ornamental nailheads or rivets.

Another object of the invention is to furnish a device of the nature set forth havin improved means for so manipulating or holding the fabric that is being worked upon, that distortion is avoided and smooth and uniform effects attained.

Another object of the invention is to produce a device of the t pe mentioned having improved means comprising rivet guide and die portions associated together in a particularly simple and novel manner to form an operative unit for safely and reliably holding the rivet and for facilitating the operation of connecting the rivet to the fabric.

Another object of the invention is to provide a device of the class alluded to having improved die means for manipulating and holding the fabric in a reliable and safe position for connection of the rivet thereto.

Other objects and advantages of the invention will become apparent as the specification proceeds.

With the aforesaid objects in view, the invention comprises the novel features, combinations and arrangements of parts hereinafter described in their preferred embodiments, pointed out in the subjoined claim, and illustrated in the annexed drawing, wherein like parts are designated by the same reference characters throughout the several views.

In the drawing:

Figure 1 is a view partly in side elevation and with other parts in central vertical section showing in open position a device embodying the invention.

Fig. 2 is an enlarged fragmentary central vertical sectional view of the device closed upon a sheet of fabric, but with the rivet omitted and the fabric indicated in dot-dash lines.

Fig. 3 is an enlarged sectional view taken on line 33 of Figure 1.

Fig. 4 is a perspective View showing a type of rivet that may be employed in the use of the invention.

Fig. 5 is a plan view of a piece of fabric decorated by a series of the rivets in accordance with the invention.

The advantages of the invention as here outlined are best realized when all of its features and instrumentalities are combined, but useful embodiments may be produced involving less than the whole.

It will be obvious to those skilled in the art to which the invention appertains, that the same may be incorporated in several dilTerent constructions. The accompanying drawing, therefore, is submitted merely as showing a preferred exemplification of the invention.

Referring in detail to the drawing, Ill denotes a device embodying the invention. The same may include any suitable support or base II that may consist of a ring-shaped plate. Mounted thereon in any feasible manner is a member l2 which may comprise a cylindrical portion l3 press-fitted or otherwise secured in the opening of the member ll. Overlying the latter is an annular flange [4 formed on its upper surface with a central boss l5. Attached or integrally connected in any required manner to the member I2 is a central vertical shank l5 carrying at its upper end a coaxial die member [1. The latter may haveits upper surface dished to form a suitable seat for the decorative head of a rivet or nail.

A guide member It may include a sturdy integral collar l9 movable along the shank I6 on which it is snugly slidably fitted. The member I8 is concentric with the die member I 1 and is formed with an annular upward extending flange 20 forming a cup-like or cylindrical portion in which the die member I1 is slidable and which is adapted to serve as a guide or holder for a nail or rivet. Any suitable means such as an expansion coil spring 2| engages around the collar l9 and sits at its lower end on the shoulder l4 and at its upper end against the annular flange 22 on the collar I9. The spring is reliably centrally retained by the collar and by the boss l5 around which it engages. The relationship'of the parts is such that the spring urges the member Hi to a normal upper position shown in Figure 1 in which the die member I! lies on the base of the cup 20, with the collar l9 spaced above the boss l5. The guide member I8 is adapted to be depressed against the tension of the spring 2| until it comes into contact with the boss l5 for a stop coaction, at which depressed position the upper face of the die member I! may be substantially flush with the rounded rim of the cup-like rivet holder 20.

A complemental die member 23 may include a shank 24 having at the upper end thereof a knob 25 adapted for convenient hand operation. At

involves a direct coaction between the die meme ber I1 and the die section 26 in the usual manner:

The associated generally conoidal portion. 29,"

serves to facilitate alinement of the die members, it being noted that the die member" 23 is wholly separate from and unattached to the other' parts of the apparatus and is used in the nature of a hammer freely operated by hand to perform'theriveting operation. However, the essential purposeoi: theconoidalpart; 29"is to serve assa' 'position and holding means for a fabric 3ft? shown in dot-dash lines;. It: accomplishes this-by" downweirdly-cupping the:flexiblerfabrio over the rivet guide 201m ajunifo-rm manner so as to-assure, that.

4 head 32 and a plurality of upward extending prongs 33. A rivet of this type is usually made as a simple one-piece stamping of brass or other suitable material.

Figure 5 shows a piece of fabric 34 of any suitable material adapted to be used in the constructioffiif a ladies garment, hat or handbag, or upholstery seat covers, and for many other purposes. This fabric may have a series of fasteners 3| whose heads decorate-the outer surface of the fabric, these heads being arranged in lines of different shapes and according to various designs. The device herein described and the decoration provided may also be employed to interconnect two pieces of fabric to form a seam or the like.

In use, the operator merely marks out on the fabric. the desiredlocations of the rivets and then punches the rivets through the fabric at those points by placing the fabric over the rivet holder 20 and then bringing down the die member 23 with ahammer-like blow. Eachrivet isrseparately inserted and used,- being placed in. the holder 20 withthe prongs 33v projecting. upwardly. The

size of the rivets may besuchthat. they. may be therivetwill be secured at the exact point chosen;

Accidental lateral shifting of the'fabric-isprecluded anda possibleangular insteadof therequiredprecise and'straight entering 'of' the; rivet are avoided; The conoidal part2 eemay be so designed in relation to the die section .26 that when the-rivet is fully headed over'and secured,

the lower edge of the. part- 29: holds the-fabric relatively snugly against the flange 2 2 of the rivet guide I 8; Further, the'several', parts are'sodesigned that the fabric 5118111111017 be cut'by thedie nor bypthe upper edge-ofv the rivet holder,- 263,-nor. by thelower edge ofthe part'29-. Since the device is intended to-be' used with fabrics of different thicknesses, suitable clearances a-re'provided' for thispur-pose.

It. is. noted that the apparatus provides only two. units; including the upper unit ordie-member 23, and the lower. unit comprisingthabasell; the diememberr H! and the-rivetho'lderi fi up, wardly' propelled by itsspring 2 'l .I which is held in place in a-nove and compact-mannerby-the. guide shank. I 6: actingasasta-ndardor connector 'member between the die I? and the base ll, the-rivet holder. being depressed bythe die member 23 against. the force of the spring, the pressure being Number Name Date- 579,538" Hasty 'Mar. 23} 1897 659,626 Pomeroy: Oct; 9; 1900' l;438,692 Bourque' Dec. 12; 1922 I',48'7,543 Dingwall Mar. 13', 1924 1,838,973 Wilder: Dec; 29; 1931 completely received in. the holder 20. and. relatively snugly fit the. same. not be torn ormarred by the prongs as thefabric is moved to riveting position. 2

I claim: 7

A household device including. superposed. die members cooperating with each other to.- flattena rivet or the like on a flexible. member after driving the rivet therethrough, a guidemember for the rivet mounted on the lower die member; a spring urging the guide member to. an upper position in which the guide member formsarivet holder for the lower die member, the upper" die member having a relatively large tapered entrance for the lower die member; andthe guide member having an annular shoulder adapted to] abut the upper guide member at said entrance whereby the guide member is depressedby theupperidie' The followingreferences areofrccorddnithfe' file of this patent: V

UNITED STATES-PATENTS- Thus the fabric can.- 7 

